Injector.



. C. POTTEL.

INJEGTOR. yAPPLIOATI0N FILED JULY 12,1911.`

1,016,772. Patented Feb.6,1912.

2 SHEETS-SHEET 1.

, ITLVe-YLTOV: man s Carl -Po'el cuLUMBlA PLANOGRAPH to.. WASHINGTON, n.c.

CARL POTTEL, OF HALLE-ON-THE-SAALE, GERMANY.

INJEGTOR.

Specification of Letters Patent.

Application iiled July 12, 1911.

Patented Feb. 6, 1912.

serial No. 638,056.

To all whom t may concern Be it known that I, CARL POTTEL, engineer, asubject of the Emperor of Germany, residing at Halle-on-the-Saale,Germany, have invented certain new and useful Improvements in Injectors,of which the following is a clear, full, and exact description.

The method heretofore commonly adopted for making the nozzles in aninjector removable consists in screwing the nozzles into removabletubular insertion, or in connecting them to each other by screwedcouplings so that they can be collectively withdrawn.

The object of the present invention is to obviate the use of screwing inthis connection with a view to removing the disadvantages which arisefrom binding, due to heat and deposit of scale, and the risk ofdistortion, which may, on reassembling the parts, interfere with theproper positioning of the same and thus reduce the eiiiciency of theapparatus.

According to the present invention the nozzles are slidably insertedinto the casing or into a tubular insertion in the same, and areprovided with abutments by means of which they abut against each otherin series and are thus accurately positioned in relation to each otherand to the casing.

The invention is illustrated in the accompanying drawing, Figures 1 and2 showing one form of construction, and Figs. 3 and 4 another.

Referring in the rst place to Figs. 1 and 2, which are a longitudinalsection and a cross-section respectively, the apparatus comprises acasing 1, with a steam supply port 2 and a water supply port 3. Thecasing contains a tubular piece 4 which iits against the wall of thecasing at the parts where the said piece supports the nozzles 7, 8 and9. The part 4 has apertures for inlet and outflow of water, the saidapertures being formed between the narrow connecting pieces 10 shown inFig. 2. The tubular piece 4 is made tight with the casing in the usualmanner, by insertion of filaments or the like, and the nozzles lit intothe tube and have ribs 7a and 8aM arranged so that the nozzles abutagainst each other in series though having clearance between theirorices. The pressure or discharge nozzle 9 abuts against a flange 11 ofthe tube 4, and the steam nozzle 7 and sleeve abut, flush with eachother, against a nut 12 screwed on to the end part 13 of the injector,over which a nut 14 is screwed. To prevent rotation of the nut 12 in thecasing, the nut has ribs 15 engaging grooves in the wall of the casing.The intermediate nut- 12 is used for the reason that the nut 14 cannotmake a tight joint both at 16 and 17; but by slightly turning the part13 the nonrotatable nut 12 screwed thereon can be firmly pressed againstthe surface 16.

For disconnecting the parts, it is only necessary to unfasten the nut14, which is not liable to bind, being external, and the parts 13 and12, and the nozzles, can then be withdrawn, without requiringunscrewing. The said parts can then be inserted again by merely pushingthem in, in the proper order, these parts being properly positioned byvirtue of the abutment thereof against each other, as described.Tightening up, if necessary, can be effected by turning the part 13, asdescribed. The whole operation being performed from one end of theapparatus, the other end can, without causing inconvenience in use, beplaced in an inaccessible position.

In the construction shown in Figs. 3 and 4 the nozzles are not mountedin a tubular insertion, but are coupled with each other so that they canbe collectively withdrawn and then separated. For this purpose thenozzles have coacting coupling members, which, in the constructionshown, are of the bayonet coupling type. The steam nozzle 7 and themixing or combining nozzle 8 have annular coupling members 20, whichform abutments for the nozzles 8 and 9 and have dogs 21 which can passthrough gaps 22 in flanges on the nozzles 8 and 9, and interlock withthe latter on the coupling members being rotated.

A modification which may be made without departing from the principle ofthe invention consists in making the mixing or combining nozzle extendbeyond the end of the injector, and inserting the pressure ordischarging nozzle into the prolongation.

Vhat I claim is:

1. In combination, in injectors, a casing, a series of nozzles slidablyinserted in said casing and having parts abutting against each other andcollars abut-ting against relatively stationary parts, a collar mountedloosely and externally on one member of said casing and cooperating withscrewthreads on the end of the other member of said casing to connectthe same detachably, a nut mounted onthe former member inside of thelatter member and provided with ribs which t into grooves in said lattermember to look said nut against rotation, whereby it may be adjustedlongitudinally of said last member to tighten the above connection andthe engagement between the various nozzles and said nozzles and saidintermedi- 'ate nut substantially as set forth.

'2. In combination, in injectors, a easing consisting of two members, anut loosely mounted on one member for connecting said members, a cagemounted in the other of said members and having an annular flange whichholds it in position and a series of nozzles mounted in said cage, saidnozzles having shoulders which engage annular flanges in said cage andribs which engage the shoulder of the adj aeent nozzle for hold'-ingsaid nozzles in position and means for tightening the connectionbetween said members of said casing and the engagement between saidcasing and said cage and between said nozzles in said cage,substantially as set forth.

3. In combination, in injectors, a casing consisting of two members, anut loosely mounted on one member for connecting said members, a seriesof Vnozzles removably mounted as a unit in said casing and means fortightening the connection between said members of said casing and theengagement between said casing and said series of nozzles substantiallyas set forth.

Signed this 27th day of June, 1911.

CARL POTTEL.

Witnesses:

ALBERT R. MoRAWETz, RUDOLPH FRICKE.

vCopies of this patent may be obtained for ve cents each, by addressingthe Commissioner of Patents,

Washington, D. G.

